Sagging Sewage Technique Lines-- Dirt modifications can make your drain line to sag. When this happens, the segment which has sunk accumulates paper together with squander leading to a blockage.?????????? ?? ????? ??????? ?????????? ??? ???????? ??? ??? ??????????? ?? ??? ?????? ?????????? ????????? ?????????? ?? ???? ??????? ???, ???? ??? ???? ???